Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add a TXT record for verification

Before you use your domain with Office 365, we have to make sure that you own it. Your ability to log in to your account at your domain registrar and create the DNS record proves to Office 365 that you own the domain.

Note

This record is used only to verify that you own your domain; it doesn't affect anything else. You can delete it later, if you like.

To get started, go to your domains page at DreamHost by using this link. You'll be prompted to Sign in.

On the Dashboard page, choose Domains, and then choose Manage Domains.

On the Manage Domains page, in the Domain section, choose DNS for the domain that you want to edit.

In the Add a custom DNS record section, in the boxes for the new record, type or copy and paste the values from the following table.

(You may have to scroll down.)

(Select the Type value from the drop-down list.)

Name

Type

Value

Comment

(Leave this field empty.)

TXT

MS=ms XXXXXXXXNote: This is an example. Use your specific Destination or Points to Address value here, from the table in Office 365. How do I find this?

(This field is optional.)

Choose Add Record Now!

Wait a few minutes before you continue, so that the record you just created can update across the Internet.

Now that you've added the record at your domain registrar's site, you'll go back to Office 365 and request Office 365 to look for the record.

Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

Add an MX record so email for your domain will come to Office 365

Follow the steps below.

To get started, go to your domains page at DreamHost by using this link. You'll be prompted to Sign in.

On the Dashboard page, choose Mail, and then choose Custom MX.

In the Manage Mail Delivery section, in the Actions column, choose Edit for the domain that you want to edit.

In the Custom MX Record section, in the boxes for the new record, type or copy and paste the following values from the following table.

(You may have to scroll down.)

(If there are any other existing MX records, mark those records to be deleted.)

MX Record (required)

0 <domain-key> .mail.protection.outlook.com. This value MUST end with a period (.) The 0 is the MX priority value. Add it to the beginning of the MX value, separated from the remainder of the value by a space. Note: Get your <domain-key> from your Office 365 portal account. How do I find this?

Choose Change this domain to use custom MX records now!

If there are any other existing MX records, delete each record by selecting the entry and then pressing the Delete key on your keyboard.

If you have deleted any records, choose Update your custom MX records now!

Add the six CNAME records that are required for Office 365

Follow the steps below.

To get started, go to your domains page at DreamHost by using this link. You'll be prompted to Sign in.

On the Dashboard page, choose Domains, and then choose Manage Domains.

On the Manage Domains page, in the Domain section, choose DNS for the domain that you want to edit.

In the Add a custom DNS record section, in the boxes for the new record, type or copy and paste the values from the first row in the following table.

(You may have to scroll down.)

(Select the Type value from the drop-down list.)

Name

Type

Value

Comment

autodiscover

CNAME

autodiscover.outlook.com. This value MUST end with a period (.)

(This field is optional.)

sip

CNAME

sipdir.online.lync.com. This value MUST end with a period (.)

(This field is optional.)

lyncdiscover

CNAME

webdir.online.lync.com. This value MUST end with a period (.)

(This field is optional.)

msoid

CNAME

clientconfig.microsoftonline-p.net. This value MUST end with a period (.)

(This field is optional.)

enterpriseregistration

CNAME

enterpriseregistration.windows.net. This value MUST end with a period (.)

(This field is optional.)

enterpriseenrollment

CNAME

enterpriseenrollment.manage.microsoft.com. This value MUST end with a period (.)

(This field is optional.)

Choose Add Record Now!

Using the preceding two steps and the values from the other five rows in the table, add each of the other five CNAME records.

Add a TXT record for SPF to help prevent email spam

Important

You cannot have more than one TXT record for SPF for a domain. If your domain has more than one SPF record, you'll get email errors, as well as delivery and spam classification issues. If you already have an SPF record for your domain, don't create a new one for Office 365. Instead, add the required Office 365 values to the current record so that you have a single SPF record that includes both sets of values.

Follow the steps below.

To get started, go to your domains page at DreamHost by using this link. You'll be prompted to Sign in.

On the Dashboard page, choose Domains, and then choose Manage Domains.

On the Manage Domains page, in the Domain section, choose DNS for the domain that you want to edit.

In the Add a custom DNS record section, in the boxes for the new record, type or copy and paste the values from the first row in the following table.

(You may have to scroll down.)

(Select the Type value from the drop-down list.)

Name

Type

Value

Comment

(Leave this field empty.)

TXT

v=spf1 include:spf.protection.outlook.com-all Note: We recommend copying and pasting this entry, so that all of the spacing stays correct.

(This field is optional.)

Choose Add Record Now!

Using the preceding two steps and the values from the second row in the table, add the other SRV record.

Add the two SRV records that are required for Office 365

Follow the steps below.

To get started, go to your domains page at DreamHost by using this link. You'll be prompted to Sign in.

On the Dashboard page, choose Domains, and then choose Manage Domains.

On the Manage Domains page, in the Domain section, choose DNS for the domain that you want to edit.

In the Add a custom DNS record section, in the boxes for the new record, type or copy and paste the values from the first row in the following table.

(You may have to scroll down.)

(Select the Type value from the drop-down list.)

Name

Type

Value

Comment

_sip._tls

SRV

100 1 443 sipdir.online.lync.com. This value MUST end with a period (.)

(This field is optional.)

_sipfederationtls._tcp

SRV

100 1 5061 sipfed.online.lync.com. This value MUST end with a period (.)

(This field is optional.)

Choose Add Record Now!.

Using the preceding two steps and the values from the second row in the table, add the other SRV record.

Note

Typically it takes about 15 minutes for DNS changes to take effect. However, it can occasionally take longer for a change you've made to update across the Internet's DNS system. If you're having trouble with mail flow or other issues after adding DNS records, see Troubleshoot issues after changing your domain name or DNS records.

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